I found the error.
It was me that had done wrong
I used the wrong thing when i extruded.
When you extrude you get a difrent kind of x.y and z axel.
When i extruded to chaingt by presing W to the global x.y and z and that why it became so weird when i did the Division.
What is the diffrense when you use the x.y and z when you press extrude. Or press extrude and press W to move the extrude in different ways?
Sorry for my english//Armandz
I hope you understand what i try to say.
Look at the picture and you may get what i try to say.